Table 2

Anthropometric and socio-demographic data of the excluded and remaining participants
in the ACARFS study

Excluded Participants (n29)

Remaining participants

Total (n 691)

Year 4 (n 354)

Year 6 (n 337)

School Year 4 (%)

58.6*

51.2*

Female (%)

65.5*

56.2*

56.2

56.1

Age (years) -mean ± SD

10.8 (±1.1)†

11.0 (±1.1)†

10.0 (±0.4)

12.1 (±0.4)

Height (cm) -mean ± SD

146.8 (±7.7)†

145.7 (±9.4)†

139.4 (±6.7)

152.4 (±6.9)

Weight (kg) -mean ± SD

40.9 (±7.4)†

41.0 (±10.8)†

35.9 (±8.3)

46.3 (±10.6)

BMI (kg/m2) -mean ± SD

18.9 (±2.6)†

19.1 (±3.5)†

18.4 (±3.2)

19.8 (±3.5)

BMI z-score -mean

0.73 (±1.1)†

0.67 (±1.2)†

0.63 (±1.2)

0.72 (±1.1)

Overweight (%)a

20.7†

22.3†

21.2

23.4

Obese (%)a

6.9†

5.8†

6.5

5.1

cm, centimetres; m, meters; SD, standard deviation. a Healthy weight, overweight or obese classified using the UK age and gender-specific
BMI z-score cut-off points that correspond to a BMI of 25 for overweight and 30 for
obese at 18 years of age. * P-values for the comparison of excluded participants and remaining participants using
the students t-test (two-tailed) were not significant (P > 0.05). †P-values for the comparison of excluded participants and remaining participants using
the Wilcoxon test (two-tailed) were not significant (P > 0.05).